Improvement in furnaces for heating tires



lUNITED STATES ATENE @Enron JAMES DEGREE, OF HINESBURG, VERMONT.

IMPROVEMENT IN FURNACES FOR HEATING TIRES.

Specification forming part of Letters Patent No. 120,723, dated November 7, 1871.

To all whom 'it 'ma/y concern:

Be it known that I, J AMEs DEGREE, of Hinesburg, in the county of Chittenden and State of Vermont, have invented a new and valuable Improvement in Fire-Ovens; and I do hereby declare that the following is a full, clear, and eX- act description of the construction and operation of the same, reference being had to the annexed drawing making a part of this specification, and to the letters and figures of reference marked thereon.

The drawing is a representation of a vertical section of my invention.

This invention has relation to an oven for heating tires for wheels preparatory to their adjustment 5 and the novelty consists chieiiy in providing two lateral openings through the plate which separates the fire from the tirechamber, as hereinafter described.

Referring to the drawing, A designates the oven, built of brick or metal, and furnished with doors B in front, a draught and smoke-flue, B at the top, and at the bottom a sliding fire-box, C, over which is a grate or grate-bars, D, with interstices between them to admit the heat and dame up to the tire. These grated openings in the plate D' are not placed over the center of the re-box, but near the ends thereof, in order that the direct action of the heated currents may be brought to bear upon the sides of the tires rather than immediately against their under portions, which, being so near the flames, would be unduly heated in comparison with the sides and upper portions. The ovenis of sufficient size to hold the largest tire. The tires are hung against the back of the oven on hooks E arranged for the purpose of holding them, and, fire being made and the oven-doors closed, the uniform heating of the tire is speedily accomplished. One or more tires of different sizes may be heated at the same time without inconvenience and without any more fuel than is required to heat one. After the tires are heated they may be used one by one, the heat being retained in the oven by turning the regulating-damper B" in the smoke-Hue. The top of the oven should be rounded so as to reflect the heat toward the tire, which is hung near it.

The advantages of this tire-oven are safety, as with it the occurrence of fire is, to a great degree, prevented; convenience, as with it a re can be made indoors when the state of the weather or other conditions render it troublesome to have a fire out of doors; and, economy, as it does not require more than one-fourth the quantity of fuel to keep the oven in good condition as it does to feed an ordinary re built for the same purpose.

In my furnace the principle adopted is to introduce the direct heat at the sides, so that will first strike the slanting sides of the tires. The bottoms of the tires will be sufficiently heated by reiected and transmitted heat, and their tops will receive the full benefit of all the upward currents as they converge to the smoke-pipe without obstruction, besides the reiiection from the rounded top. v

IV am aware of the tire-furnace of J. H. Whitaker, patented .I une 12, 1860; and I am aware, al

so, that ovens for heating tire have been used that resemble my invention somewhat in shape and arrangement; I do not, therefore, claim to be the original inventor of such ovens; but

I claim and desire to secure by Letters Patent- The two series of perforations in the plate D two witnesses.

JAMES DEGREE. Witnesses:

ELMER BEEcHER,

G. W. MURRAY. (60) 

